mems wireless transceiver for use of non-invasive system ... · mems wireless transceiver for use...
TRANSCRIPT
![Page 1: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/1.jpg)
MEMS Wireless Transceiver for Use of Non-InvasiveSystem Diagnostics
Critical Design Review - Summer 2019
Group 9:Jessica Ondrizek
Toluwaleke OlutayoJustin Phelps
![Page 2: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/2.jpg)
MOTIVATION● Noninvasive testing utilizes small sensors within a
system avoid catastrophic failures● Our sponsor requires a method of communicating
with a MEMS sensor that is placed inside a rotating motor.
![Page 3: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/3.jpg)
REQUIREMENTS● Design a transceiver that transmits and receives frequencies within the 27 MHZ
ISM band○ Modified the design for a 1 MHZ due to hardware complications
● Visualize the received signal for analysis ● Transmit data to computer for potential further analysis
![Page 4: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/4.jpg)
DESIGN SPECIFICATIONS
CATEGORY: SPECIFICATION:
Power Consume less than 10 watts
Production Cost Cost less than $1,500.00
Deliverables Microcontroller codeHardware
![Page 5: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/5.jpg)
STANDARDS● IEEE 1118.1-1990 IEEE Standard for Microcontroller System Serial Control Bus
○ Defines a protocol for the interconnection of independent devices○ Ensures that they devices can reliably communicate with one another
● IEEE C95.1-2005 Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz○ Restricts the amount of energy that can be absorbed by a person○ To comply with the FCC, the specific absorption rate (SAR) is 1.6 W/kg
● FCC 15.221 Operation in the band 525-1705 kHz○ Intentional radiators in the AM band can operate if:
■ The measurement distance is less than 30 meters■ The field strength is less than 24000/F(kHz)
![Page 6: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/6.jpg)
DESIGN CONSTRAINTS - FREQUENCY● Availability of components is limited at this frequency band
○ Self-resonant frequency of inductors limits components even more○ Inductors must have a self-resonant frequency 10x the higher than the
operational frequency● Gain Bandwidth Product limits the amount of gain attainable from operational
amplifiers as the operational frequency increases.○ GBP = Gain x Frequency
![Page 7: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/7.jpg)
DESIGN IMPLEMENTATION
![Page 8: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/8.jpg)
DESIGN IMPLEMENTATION: Transmission
![Page 9: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/9.jpg)
DESIGN IMPLEMENTATION: Signal Reception
![Page 10: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/10.jpg)
SIGNAL GENERATION
![Page 11: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/11.jpg)
SIGNAL GENERATION
![Page 12: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/12.jpg)
INCOMING SIGNAL FILTER
![Page 13: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/13.jpg)
BANDPASS FILTER
![Page 14: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/14.jpg)
INCOMING SIGNAL CONDITIONING
![Page 15: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/15.jpg)
INCOMING SIGNAL CONDITIONING
![Page 16: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/16.jpg)
ADC SIGNAL BUFFER
![Page 17: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/17.jpg)
ADC SIGNAL BUFFER
![Page 18: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/18.jpg)
MCU
![Page 19: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/19.jpg)
MCU (TMS320F28335PGFA) DEVICE TMS320F28335 TMS320F28332
FREQUENCY (MHZ) 150 100
ON-CHIP FLASH MEMORY (kB)
512 128
# OF GPIO PINS 88 88
INSTRUCTION CYCLES (ns)
6.67 10
ADC CONVERSION TIME (ns)
80 80
COST $25.98 $17.60
![Page 20: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/20.jpg)
SOFTWARE CONCEPT DESIGN● The software design will make use of the following programs and
interfaces:Program Name Function
TI Code Composer Editing, debugging, linking, mapping, UART terminal, and compiling.
TI DSP software Overlay (C2000 Control
Suite)
Provide device specific code, header files, and example projects.
JavaScript Module Graphic User Interface (GUI) and signal processing.
![Page 21: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/21.jpg)
RECEPTION AND PROCESSING SOFTWARE FLOWCHART
![Page 22: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/22.jpg)
TRANSMISSION SOFTWARE FLOWCHART
![Page 23: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/23.jpg)
PCB Design● Consisted of two daughterboards to interface with the microcontroller
development board● Transmit board
○ 3.05” x 2.19”○ 28 SMD components
● Receiver board○ 6.3” x 3.49” ○ 108 SMD components
![Page 24: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/24.jpg)
PCB Design Considerations● Minimize the length of the copper traces to minimize the inherent
inductance and capacitance of the traces.● Minimize the number of vias (where possible) to minimize the inherent
inductance and capacitance of the vias. ● Minimize the current loop by avoiding long, winding traces.● Place bypass capacitors as close as possible to amplifiers and ground.● Avoid placing vias between bypass capacitors and amplifiers.
![Page 25: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/25.jpg)
PCB - Receiver Board Signal Path
![Page 26: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/26.jpg)
Difficulties ● Hardware
○ Operational amplifiers not providing the amount of gain expected.
● Software○ Unable to implement serial communication and PWM at the same time.○ FFT accuracy depends on large number of data points and causes processing delays.
● PCB○ Documented bug in Altium Designer 19 that prevented NC drill files from being
generated, so the schematics and PCB had to be redesigned in Eagle.○ Faulty PCB manufacturing caused shipment delays.
![Page 27: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/27.jpg)
ADMINISTRATIVEASSIGNMENT PRIMARY SECONDARY
FILTER DESIGN JUSTIN TOLU
SCHEMATICS JESSICA JUSTIN
SOFTWARE TOLU JUSTIN, JESSICA
PCB DESIGN JESSICA JUSTIN, TOLU
![Page 28: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/28.jpg)
PROJECT EXPENSESCATEGORY ESTIMATED
COSTACTUAL COST VARIANCE
Total Parts $736.39 $558.37 -24.17%
PCB Software $99.00 $164.00 +65.65%
PCB (5 boards) $400.00 $509.00 +27.25%
Total Project Cost $1,315.39 $1,231.37 -6.38%
![Page 29: MEMS Wireless Transceiver for Use of Non-Invasive System ... · MEMS Wireless Transceiver for Use of Non-Invasive System Diagnostics Critical Design Review - Summer 2019 Group 9:](https://reader033.vdocuments.mx/reader033/viewer/2022053013/5f1060d27e708231d448d084/html5/thumbnails/29.jpg)
QUESTIONS?